Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region

Dangerous and extreme heat will remain across portions of the southern U.S. this week. Heavy rainfall may bring significant flash flooding across portions of the Mid-Atlantic and Northeast through the night, and additional flash flooding concerns across New England on Wednesday. Monsoonal thunderstorms will bring a flash flood risk to the Four Corners region, especially in burn scar areas Read More >

Hazardous Weather Conditions

Current conditions at

Marshall Memorial Municipal Airport (KMHL)

Lat: 39.1°NLon: 93.2°WElev: 779ft.

Fair

73°F

23°C

Humidity 100%
Wind Speed Calm
Barometer 29.91 in
Dewpoint 73°F (23°C)
Visibility 7.00 mi
Last update 28 Jul 11:35 pm CDT
Extended Forecast for

Boonville MO

  • Tonight

    Tonight: Partly cloudy, with a low around 73. Calm wind becoming east around 5 mph.

    Low: 73 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 92. Heat index values as high as 95. East wind 5 to 8 mph.

    High: 92 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68. East southeast wind 3 to 5 mph.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 90. Southeast wind around 6 mph.

    High: 90 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 70. Southeast wind 5 to 7 mph.  Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 70 °F

    Mostly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 88. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 88 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers before 1am.  Partly cloudy, with a low around 67. Chance of precipitation is 40%.

    Low: 67 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 73. Calm wind becoming east around 5 mph.
Wednesday
Mostly sunny, with a high near 92. Heat index values as high as 95. East wind 5 to 8 mph.
Wednesday Night
Mostly clear, with a low around 68. East southeast wind 3 to 5 mph.
Thursday
Increasing clouds, with a high near 90. Southeast wind around 6 mph.
Thursday Night
Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. Southeast wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
A chance of showers before 1am. Partly cloudy, with a low around 67. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 65.
Sunday
Sunny, with a high near 86.
Sunday Night
Mostly clear, with a low around 65.
Monday
Sunny, with a high near 88.
Monday Night
Mostly clear, with a low around 67.
Tuesday
Sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Boonville MO
 38.98°N 92.75°W (Elev. 587 ft)
2:42 pm CDT Jul 28, 2026
11pm CDT Jul 28, 2026-6pm CDT Aug 4, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database